Hanna Instruments HI 933300 - Manual (Page 21)

19
PROCEDURE FOR OFFSET CALIBRATION
(at 0.0 µS/cm)
• To perform the Offset
calibration, dry the con-
ductivity probe and leave
it in air.
• Press the ALT and the CAL keys simulta-
neously. The primary LCD display will blink
"
0.0 µS" for about 10 seconds.
• When " 0.0 µS" stops blinking, the cali-
bration can be confirmed. Press the CFM
key to confirm the offset value.
• If the input reading is out of the offset
range, an error message will show on the
secondary display "
E0 ". Press the CAL
key to re-calibrate the value.
• If everything is satisfactory
the LCD will blink
"
84.0 µS", expecting the
first calibration solution.
• Press the CAL key to exit
the calibration mode now.
CAL ALT
µ S
µ S
CFM
CAL
CAL
µ S